Strength of Materials
The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of

friction
repose
kinematic friction
limiting friction

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Strength of Materials
The weight of a body is due to

gravitational force of attraction towards the centre of the earth.
gravitational pull exerted by the earth
force of attraction experienced by par-ticles
centripetal force of earth

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